JAVA将一个目录下的所有文件复制到另一个新目录

package demo;

import java.io.File;
import java.io.IOException;
import java.nio.file.Files;
import java.nio.file.Paths;

/**
 * @author yeqv
 * @program A2
 * @Classname A5
 * @Date 2022/1/20 16:04
 * @Email w16638771062@163.com
 */
public class A5 {
    //复制目录
    public static void main(String[] args) throws IOException {
        String a = "D:\\金山打字";
        String b = "D:\\银山打字";
        copy1(a, b);

    }

    public static void copy1(String a, String b) throws IOException {
        copy2(new File(a), new File(b));
    }

    public static void copy2(File file, File file1) throws IOException {
        if (!file1.exists()) {
            file1.mkdirs();
        }
        if (file.isDirectory()) {
            File[] files = file.listFiles();
            for (File file2 : files) {
                if (file2.isDirectory()) {
                    copy2(file2, new File(file1.getPath(), file2.getName()));
                } else {
                    Files.copy(file2.toPath(), Paths.get(file1.getPath() + "\\" + file2.getName()));
                }

            }

        }
    }

}